2-24 Service Guide
2.4 ALI M7101 (Power Management Unit)
2.4.1 Features
Four operating states - ON, DOZE, SLEEP, APM
Programmable DOZE and SLEEP timer
Programmable EL timer for backlight control
Two Programmable APM timers
Two output pins depending on operating state, each pin is programmable and power
configurable
Provides system activity and EL activity monitorings, includes
Video
Harddisk
Floppy
Serial port
Parallel port
Keyboard
Six programmable I/O address groups activity monitor
Two programmable memory address groups activity monitor
Multiple external wake-up events from DOZE or SLEEP to ON states
External Push button
Cover open
Modem Ring
RTC alarm
DRQ
Two level battery warning monitors
24 General Purpose I/O pins. Each pin can be programmed to become input or output
32 External expandable general purpose output signals
32 External expandable general purpose input signals
LCD control
Rundown monitor detect
Suspend wake-up detect
100-pin PQFP package